China Education Equipment Purchasing Network News: sewage treatment (sewage treatment, wastewater treatment): the process of making sewage meet the water quality requirements for drainage or reuse of a certain water body and purifying it. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering, etc., and it is also increasingly entering the daily life of ordinary people.
When talking about groundwater pollution prevention and control measures, the Executive Meeting of the State Council held on August 24 made it clear that urban sewage treatment and reuse rates should be improved. According to what the reporter knows, sewage treatment support policies will be introduced one after another. This means that the sewage treatment industry that has gone through the golden cycle of the "Eleventh Five-Year Plan" will continue to "play" during the "Twelfth Five-Year Plan" period.
Huge capacity demand
The executive meeting of the State Council proposed that urban pollution affecting groundwater should be strictly controlled. Reduce the urban domestic pollution load, promote the transformation of the pipeline network system, improve the urban domestic sewage treatment rate and reuse rate, and strengthen the construction and treatment of landfills.
Groundwater is an important source of water for domestic, industrial, and agricultural use in China. However, due to increased pollution of surface water, the quality of groundwater is also deteriorating. According to data provided by the Ministry of Environmental Protection, 90% of China ’s urban groundwater has been polluted to varying degrees by organic and inorganic toxic and harmful pollutants. And this situation is still deteriorating. The survey of the Ministry of Land and Resources in recent years shows that 40% of the urban groundwater quality is deteriorating.
The intensification of groundwater pollution is related to the low urban sewage treatment rate. The data shows that China's sewage treatment rate was only 73% at the end of 2009, and this year's goal is to reach 80%. Even if this year's goal is reached, there is still a large gap with the developed country's 90% sewage treatment rate. According to industry estimates, during the "Twelfth Five-Year Plan" period, wastewater treatment capacity needs to increase by 67% to meet wastewater treatment needs.
Special planning for approval during the year
Out of the need for groundwater pollution prevention and control, sewage treatment will continue to receive policy support. According to reporters, the two plans "National Urban Wastewater Treatment and Recycling Facilities Construction Plan (2011-2015)" and "National Urban Domestic Waste Harmless Treatment Facilities Construction Plan (2011-2015)" have been included in the "Ten The overall plan for the special plan submitted to the State Council for approval during the Second Five-Year Plan period will be formally submitted for approval within the year.
According to the calculations made by the above two plans, during the "Twelfth Five-Year Plan" period, including the central government, local governments and individuals, the total investment in urban sewage treatment reached 450 billion yuan. A report recently released by the Environmental Planning Institute of the Ministry of Environmental Protection predicts that in the next five years, investment in the treatment of urban domestic sewage and industrial sewage in China will increase significantly. It is estimated that during the "12th Five-Year Plan" period, China's cumulative investment in sewage treatment will reach 1.06 trillion yuan.
In addition, according to reporters, in order to increase the intensity of sewage treatment, in the next five years, China will also moderately increase the urban sewage treatment charges and sewage charges, and promote the use of paid and trading rights for the discharge of major pollutants such as ammonia nitrogen.
According to Xu Shufan, deputy director of the Department of Science and Technology Standards of the Ministry of Environmental Protection, the first major area of ​​China's environmental protection development during the "Twelfth Five-Year Plan" period is sewage treatment. It includes denitrification and dephosphorization, upgrading of existing sewage treatment plants, construction of sewage treatment plants in small and medium cities, and industrial wastewater treatment.
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